Abstract
In this paper, we present several possible natural extensions of metric and topological entropies for random transformations on a non-compact space. In particular, Brin–Katok local entropy formula and Katok \(\delta \) entropy formula will be reformulated in the context of non-compact setting. Furthermore, a corresponding variational principle for non-compact systems is given.
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Acknowledgements
The first author would like to thank Professor Jon Aaronson and the School of mathematical sciences of Tel Aviv University for hospitality during his visit there.
Funding
The authors are supported by National Natural Science Foundation of China (No. 11871394), Israel Science Foundation (No. 1289/17), Natural Science Foundation of Shaanxi Province (No. 2019JM-123) and Natural Science Foundation of Shaanxi Provincial Department of Education (No. 18JK0770).
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Li, Z., Tang, D. Entropies of Random Transformations on a Non-compact Space. Results Math 74, 120 (2019). https://doi.org/10.1007/s00025-019-1046-3
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DOI: https://doi.org/10.1007/s00025-019-1046-3